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Hassan Mohy-ud-Din
Course Pagehttp://cyphynets.lums.edu.pk/index.php/ECE_520.435_-_DSP_for_MATLAB%2C_Fall_2010
My Webpagehttp://cyphynets.lums.edu.pk/index.php/Hassan_Mohy-ud-Din
520.435 Digital Signal Processing
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>> ‘Today’s Agenda’ ‘Overview of DSP System’ ‘Time , Frequency Picture’ ‘Discrete Signals and Concepts ‘Discrete Sequences’ ‘Delta, Unit Step, Ramp, Sine, Cosine’ ‘Exponential, Periodic, Harmonic Sequences’ ‘Folded Sequences’ ‘Even-Odd Decompositions’
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Digital Signal Processing System Block Diagram
Courtesy, DSP for MATLAB and LabView, Vol. 1, Page 3, edited by José Moura
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Time-Frequency Representations and Analysis: The Uncertainty Principle
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Discrete Time Signals and Concepts
Unit Impulse (Dirac Delta) Function
(Kronecker Delta Function in Discrete Domain)
Unit Step Function(Heaviside Function)
Unit Ramp Function
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Sine, Cosine and Exponential Sequences
‘f=Frequency’, ‘T=Sampling Time’, ‘n=Sample Index’, ‘k=# of Cycles’, ‘N=Sequence Length’
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Real Exponential Sequences
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Periodic Sequences
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Harmonic Sequences
Courtesy, DSP for MATLAB and LabView, Vol. 1, Page 18, edited by José Moura
Square Wave composed of
Sinusoidal Harmonics
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Folded Sequence
О О О Nothing but Time Reversal
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Even-Odd Decompositions
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QUESTIONS